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MAYFLIES

NO NEED TO CALL ADAM’S, THIS PEST WILL SOON BE GONE.

Adam’s does not recommend any professional treatments to prevent or manage mayflies because adult mayflies are short lived, they are important to the ecosystem, and because they develop in bodies of water.

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Pest Overview

Mayflies are aquatic insects rather than flies. They are also called dayflies because they live a very short life—typically less than two days. The presence of mayflies indicates a healthy aquatic environment because mayflies develop in water and are a primary source of food for birds, reptiles, dragonfly nymphs, and fish. The mayfly dates back many thousands of years and is considered one of the oldest living insects. Thousands of different mayfly species can be found around the world.

DIY Treatment

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The following practices will help reduce the number of Mayflies in and around your home:

Commercial lights fixtures should use sodium vapor lamps rather than mercury vapor lights.

Reduce light shining from windows

Place Insect UV light traps away from buildings

Frequently Asked Questions

HOW DO I KNOW IF I HAVE MAYFLIES?

Mayflies and the corpses of mayflies are easily spotted. Mayflies are attracted to light and can be a nuisance to homeowners typically during mating season when homes can become coated with large masses of these insects.

WHAT DO MAYFLIES LOOK LIKE?

Mayflies have lacy wings with 3 hair-like tails. When flying, the long tails can be seen flowing behind the mayfly’s body.

Mayflies have 6 legs, 3 body parts, and 2 antennae.

ARE MAYFLIES DANGEROUS?

It depends. While mayflies do not sting or bite, accumulations of dead mayflies may cause hay fever, asthma, and other allergies along with creating an offensive, fish-like smell.

Although rare, mayflies have been known to create slippery and dangerous driving conditions when they appear en masse—especially during mating season.

WHY ARE MAYFLIES IN MY HOUSE/YARD?

Mayflies are attracted to light. Because of massive numbers of mayflies, they can swarm around homes and other buildings especially at night. As a result, piles of these dead insects can be found below lights and windows in the morning.

WHAT DO MAYFLIES EAT?

Because adult mayflies live for such a short time (typically a few hours to 2 days), adult mayflies do not eat. In fact, the adults of many mayfly species do not have mouths or digestive systems because of their short lifespan.

Mayfly nymphs are aquatic. They eat weeds or algae and debris found on rocks or other surfaces.

Larger mayfly nymphs are predators and may catch smaller insects or aquatic larvae.

WHAT IS THE LIFECYCLE OF MAYFLIES?

The life cycle of a mayfly begins with a swarm of males above the water with females flying into the swarm for mating.

The male and female mate in flight. Once the male releases the female, she descends to the surface of the water where she lays her eggs.

The eggs fall to the bottom of the water where they stick to plants and stones.

Mayfly eggs hatch into nymphs. Mayflies may spend from one to two years in the nymph stage.

Adult mayflies leave the water to mate, only to die within one week or less.

WHAT ELSE SHOULD I KNOW ABOUT MAYFLIES?

While mayflies are typically not harmful to humans, their infestation can be especially annoying during the mating season beginning in May (as the name suggests).

SIX INTERESTING FACTS ABOUT MAYFLIES:

North American species hatch in huge numbers from the Mississippi River each year with estimates of about 18 trillion mayflies (more than 3,000 times the number of people on earth).

Local authorities in some cities near the Mississippi River have been known to use snow clearing vehicles to remove the exorbitant number of dead insects.

Some swarms of mayflies can be so large they can actually be tracked on radar.

Mayflies spend 99% of their lives in the water.

Mayflies live in every part of the world except the Arctic and Antarctic regions.

While mayflies are seen as a nuisance in America, they are seen as a gift in parts of Africa. Locals around Lake Victoria gather adults of the mayfly Povilla adusta with Chironomid midges to make a type of patty called ‘Kungu’. This protein rich food stuff is part of their diet.

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